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Colour

#63DDEE

  • #63DDEE
  • Cyan
  • Light
  • Nearest: Dark turquoise

#63DDEE is a cyan with RGB values 99, 221, 238 and HSL 187°, 80%, 66%. It is a light colour, so black text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#63DDEE#63DDEE
HEX#63DDEE
RGBrgb(99, 221, 238)
RGB (0–1)0.3882, 0.8667, 0.9333
RGB percentages38.8%, 86.7%, 93.3%
HSLhsl(187.3, 80.3%, 66.1%)
HSV / HSBhsv(187.3, 58.4%, 93.3%)
CMYK58.4%, 7.1%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,544,878
CSS custom property--colour: #63DDEE;

Brightness & contrast

Relative luminance0.60539WCAG 2.x, 0 is black and 1 is white
Perceived brightness195.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.11:1
Contrast with white1.6:1WCAG normal text: Fail
Contrast with black13.11:1WCAG normal text: AAA
Greyscale equivalent#C4C4C4
Inverted#9C2211

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CCD5EFno red cones; affects about 1% of men; ΔE 31.8 from the original
Deuteranopia#B7C6EEno green cones; the most common form, about 1% of men; ΔE 32.8 from the original
Tritanopia#00E6E2no blue cones; rare, and affects men and women equally; ΔE 18.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.6:1WCAG large text: Fail
Contrast with black, large text13.11:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 13.8Medium turquoise · ΔE 14.1Sky blue · ΔE 14.9Pale turquoise · ΔE 17.4Powder blue · ΔE 18.9Light blue · ΔE 19.7
Nearest named CSS colourDark turquoise (#00CED1)ΔE 13.8, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EE7463
Analogous#63EEB9, #6398EE
Triadic#EE63DD, #DDEE63
Split complementary#EE6397, #EEB963
Tetradic#BA63EE, #EE7463, #98EE63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EDFBFD
Lighter +20%#BFF1F8
Lighter +10%#91E7F3
Darker −10%#35D3E9
Darker −20%#17BDD4
Darker −30%#1294A6
Darker −40%#0D6B78
More saturated +25%#52EAFF
Less saturated −25%#79CDD8

Channel breakdown

R99
G221
B238
Red99 (38.8%)
Green221 (86.7%)
Blue238 (93.3%)
Hue187.34°
Saturation (HSL)80.35%
Lightness66.08%
Dominant channelBlue
Hex per channelR 63 · G DD · B EE

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Every value on this page was computed from “63ddee” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.